676. The chloride ethoxides of zirconium

Syntheses, silylation, characterization, and antimicrobial and antifertility activities of organoboron derivatives of some bioactive monofunctional bidentate semicarbazones

“…Boron was estimated as methyl borate. [22] Molecular weights were determined in benzene ebullioscopically using a Beckman thermometer. Utmost extra precautions were taken during the molecular weight determination.…”

Synthesis, Spectral and Thermal Studies on Schiff Base Derivatives of Heterobimetallic [Ca(II)-Ti(IV)]-μ-oxoisopropoxide

“…The downward shift in ν(C=N) stretch by ~ 15-25 cm -1 indicating the coordination of azomethine nitrogen of the ligand to the metal atom and upward shift in ν(C-O) by ~ 20-30 cm -1 suggesting the bond formation of phenolic oxygen of the Schiff base to the metal in the derivatives 27 . A number of peaks are observed in the region 700-400 cm -1 due to M-O and M-N stretching vibrations in µ-oxo compounds which is difficult to assign exactly due to the overlapping of bands in this region 28 . A number of peaks are observed in the region 700-400 cm -1 due to M-O and M-N stretching vibrations in µ-oxo compounds which is difficult to assign exactly due to the overlapping of bands in this region 29 .…”

Chemistry of Alkoxo Complexes, Part III *Synthesis and Characterization of Some Mono(carboxylato)mono (alkoxo)nickel(II) Complexes

“…Nickel was estimated gravimetrically as its dimethylglyoxime complex and alcohols, by an oxidimetry method [11].…”

“…Visible reflectance spectra of solid complexes (in Nujol mull) and in benzene solution were recorded on a Russian cO-lO recording spectrophotometer and near IR spectra on a Perkin-Elmer 4000 A. Molecular weights were determined in a semi-micro ebulliometer (Gallenkamp) with a thermistor sensing device. Magnetic susceptibility measurements were made at room temperature by standard Gouy method in benzene solution.Nickel was estimated gravimetrically as its dimethylglyoxime complex and alcohols, by an oxidimetry method [11]. …”